Across skin and nail services, the single most important safety theme is:

Across skin and nail services — as throughout cosmetology — the single most important safety theme is preventing infection: through proper sanitation and disinfection of tools and surfaces, use of single-use items, hand hygiene, handling blood exposure correctly, recognizing contraindications, and staying within scope by referring medical issues. These practices protect clients, the public, and the professional. The licensing exam weights infection control and safety heavily because they are the foundation of responsible practice in every service area.